Electric governor



UNITED STATES PATENT OFFICE.

nonnen wARRENfPARSoNs AND JOHN HODUIT, or WAMEGO, KANSAS.

ELECTRIC GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 386,602; dated July 24. 1888. i Application tiled September 2G, 1887. Serial No. 250,760. (No model.) y

To aZZ whom it may concern/: I

Be it known that we, HORACEWARRENPAR- soNs and JOHN HODUIT, both of'Wamego`,inthe countyr of Pottawatomie and State of Kansas,

5 have invented' a new and Improved-Electric the combination therewith ot' a condenser for preventing sparks at the contact-surfaces.

In .the'frame A is journaled the'shaft B,

2O which may be connected.' directly with the varmature shaft C of the dynamo or electric motor; or it may form an'extension of the armatule-shaft; or, if desirable'Jthe said shaft may be connected with the dynamo ory motor by means of a belt or gearing;l

The shaft B is made tubnlarfor a portion of its lengthgfor receiving the rod D, which extends through t-he extremity of the shaft and projects beyond the end of the frame A. In the side of the shaft B is formed a slot, a, and

a sleeve,- E, arranged to slide upon the shaft B, is connected with the rod D by apin, b. The Y shaft B is providedwith a head, F, having ears c, between which are pivotcd the ends-of the springs G, the opposite ends of the said springs being pivotcd between ears'd, projecting from the sides of the sleeve'E. Upon the springs G, at their mid-length, are mounted weights H, .which are capable of bending the,

springs G more or less when the shaft B is'revolved.

To the end of the frame A,- upon one side of the shaft B, is secured a post, I, with insulation e intervening between the post and its fastenings and the frame A. The bindingpost J, also insulated from the frame A, is connected electrically with the post I, and the post I supports a spring, K, which carries at its free extremity a contact-surface, f. The spring Kat 5o its mid-length carries a step, L, which is insulated from the spring and adapted to bear upon tle conical end of therod D. A conlactscrew, M, supported by the frame A, but insulated therefrom-is arranged in the path of the contact-pieee f, carried by the springY K, so that theoontact-piece is normallyi contact with the screw M. A binding-post, N, communicates electrically with the contact-screwr M. A condenser, O, is connected with wires g h, which extend to the bindingposts N J, and the 6o condenser serves todistribute the extra current which yis developed when the contact is l broken between the contact-piece f and the screw M, thus preventing the burning out of the contact-surfaces. y \6 vWe do not vlimit or cantine ourselves to the employment of a condenser, as a rheostat having sufticient resistance may be employed in lieu-thereof, which will allow the extra ,curlrentiiowingin opposite directions to the bind- 7o ing-posts J N to neutralize itself.

In the case of a motor the current is furnished through conductors P Q, connected'with the binding-posts J N, and when the speed of the motor increases beyond the prescribed limit the dying out of the weights H by centrifugal action bows the springs G and forces out the rod D, thereby lifting the free end of the spring K from the contact-screw M, thus breaking the electric circuit and holding the 8o circuit open until the normal speed is regained. A

In the ease of a dynamo, the current flowing through the conductors P Q and through the parts of the governor connected therewith is 8 5 interrupted momentarily when the speed is too great. l

.Having thus fully described our invention, we claim as new and desire to secure by Letters Patent 1. In an electric governor, the combination of a tubular shaft, a rod in the shaft, a sleeve fitted to slide on the shaft and connected to the rod, springs pivotcd to the shaft and sleeve, weights on the' springs, and a cireu'itinter- 95 rupting spring operated -by the said rod, substantially as described.

2. In an electric governor, the combination of a tubular shaft provided with a longitudinal slot, a rod in the shaft, a sleeve fitte'd to roo slide on the shaft and connected to the rod by a pin projecting into the slot,spriugs pivotcd of a. tubular shaft, va rod in the shaft, a sleeve f to the shaft', and sleeve, weights on the springs,

and a circuitinterrupting spring provided.

with an insulated step, with which the end of the rod engages, substantially as described'` 3. In an electric governor, the combination fitted to slide on bheshaft; and connected to the rod, springs pivoted to the shaft: and sleeve, weights on the springs, a circuit-interrupting spring provided`W-ith a 'sbepkwith which the xo rod engages, a condenser, and the contacts and electrical connections, substantially-as herein shown -and described.

HORACE WARREN PARSONS. JOHN HODUIT. Witnesses:

LOUIs B. LEACH, GEORGE TROUT. 

